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CVE-2026-90202— scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： scsi: mpt3sas：避免释放未分配的 PCIe SGL 缓冲区 函数无条件释放 中的所有条目，包括那些在设置循环因部分失败而从未被分配的条目。这会导致在调试内核中触发 “bad dma” 警告，或在非调试内核中引发空指针解引用错误。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux dbec4c9040edc15442c3ebdb65408aa9d3b82c24< 3361709fb6f6568b157c6f24ed21a4a5d86d73db affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< 240b582b6372bebb1245d911add9954b7dd6c02d affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< a61181f9ee30a98d2350c1bff32954a7521f9a23 affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< afedf35df054bd713e9e13771aa0a056932c5c67 affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< bc3398db3b64729b4a7907af317daad04795ad40 affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< 2dbdd025b228110ccbfbab95fe16e098313a14af affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< e2cd23443d3616ea0876f27762b17e2ec67d896c affected
dbec4c9040edc15442c3ebdb65408aa9d3b82c24< b9f679dfe629004b593f018df33b330d799bcee4 affected
… +10 more rows
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I. Basic Information for CVE-2026-90202

Vulnerability Information
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Vulnerability Title
scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers _base_release_memory_pools() unconditionally frees every ioc->pcie_sg_lookup[] entry, including ones the setup loop never allocated after a partial failure, causing a "bad dma" warning on debug kernels or a NULL pointer dereference otherwise.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux dbec4c9040edc15442c3ebdb65408aa9d3b82c24 ~ 3361709fb6f6568b157c6f24ed21a4a5d86d73db -
Linux Linux 4.16 -

II. Public POCs for CVE-2026-90202

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III. Intelligence Information for CVE-2026-90202

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Patches & Fixes for CVE-2026-90202 (7)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90162 8.8 HIGH ksmbd: defer publishing granted locks to prevent UAF/double-free race
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90255 8.8 HIGH Bluetooth: hci_conn: fix the SCO setup context lifetime

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90202

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